Capistrano
The Ruby equivalent of Fabric, Capistrano is a Ruby framework to configure and run deployment or system administration tasks on local or remote machines. It extends the Rake DSL to define tasks, and can group tasks by Roles.
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FastForward
Flexible operating-system event and metric forwarding agent. Receives input and forwards output using plugins.
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Mina
A Ruby Rake-like DSL for fast deployment and automation, similar to Capistrano but faster and lesser overhead, since it creates only a single SSH connection for a deploy
linux osx open-source orchestration ruby
Monit
An open source utility for managing and monitoring processes, programs, files, directories and filesystems
linux osx open-source monitoring process-mgmt c
Orc
A model driven orchestration tool for deployment of application clusters
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Rex
A agent-less server orchestration tool built on Perl
linux windows osx open-source orchestration perl